Wrath of the Titans on Blu-Ray (Movie,Ultraviolet Digital Copy & Amazon Instant Video Rental) for $9.99
Free shipping with Amazon Prime or on orders over $25
This is the movie only edition which also includes an Ultraviolet Digital Copy (no disc, download code only) and Amazon gives you a free Amazon Instant Video Rental as well.
I am not sure when they say "movie only edition" if that means that there are no extras on this blu-ray disc. I know there are several extras included on the 2 disc version.
The 2 disc edition adds a DVD version of the film as part of the package for $5 more. Link: http://www.amazon.com/Wrath-Titans-Blu-ray-UltraViolet-Digital/dp/B005LAIH5O/ref=sr_1_1?ie=UTF8&qid=1344874643&sr=8-1&keywords=wrath+of+the+titans+blu+ray